Soda ash (sodium carbonate, Na2CO3, CAS 497-19-8) is a base chemical for glass, detergents, chemicals and water treatment. Two soda ash offers at different prices are often not one product at two prices. The difference usually lies in grade, packaging, delivery terms and freight, and this guide shows how to compare them fairly.

What drives the soda ash export price

  • Grade: dense and light soda ash are priced differently, and grade also affects freight because a ton of light soda ash takes more space than a ton of dense.
  • Purity and impurities: higher total alkali with lower chloride and iron usually costs more.
  • Energy and raw materials: production depends on energy and mineral inputs, so prices move over time.
  • Packaging: 25 kg bags and jumbo bags carry different costs.
  • Order volume: a larger single lot usually earns better terms.
  • Incoterms: EXW, FCA, FOB and CIF prices are not directly comparable.
  • Freight and destination port: the route and the shipping season change the landed cost.

Dense and light soda ash at a glance

Both grades are sodium carbonate, and the difference is physical. Dense soda ash is granular with a bulk density of roughly 0.9 to 1.1 g/cm3 and is mainly used in glass. Light soda ash is a fine powder at roughly 0.5 to 0.65 g/cm3 and is used in detergents, chemicals and water treatment. Exact figures vary by producer, so check the TDS. Our article Soda Ash Dense vs Light explains the grades in more detail.

How to compare two soda ash offers fairly

Before comparing prices, make sure these five points match:

  • Grade (dense or light) and purity
  • Packaging type
  • Delivery terms, for example both offers on FOB
  • Quantity and shipment timing
  • Documents: TDS and, where available, a batch COA

If any one of these differs, a price comparison is misleading.

Warning signs in an unusually low offer

  • Purity and impurity limits are missing from the TDS.
  • The specification does not match the product description.
  • Independent pre-shipment inspection is not possible.

Packaging and shipping

Soda ash ships in 25 kg or 50 kg bags, jumbo bags and in bulk, and containerized shipping is common for export. Keep it dry, because soda ash absorbs moisture and cakes. The export minimum stated on our site is 25 tons, and it may differ by product.

What to send when you request a quote

  • Grade (dense or light) and required purity
  • Quantity in tons
  • Packaging type
  • Destination port and delivery term
  • End use
  • The TDS of any competing offer, so we can compare like with like

Kasma Trade is an independent B2B broker and export facilitator, not a manufacturer or web shop. We collect supplier offers, review technical documents and coordinate packaging and shipping. If you already hold another offer, send its specification and we will compare the two side by side.

Frequently asked questions

  • Are dense and light soda ash priced the same? No. Grade, packaging and delivery terms all affect the price.
  • What is the difference between FOB and CIF? CIF includes freight and insurance to the destination port and FOB does not, so the two prices should not be compared directly.
  • Which grade suits glass manufacturing? Dense soda ash is the usual choice for glass.
  • Do you provide a TDS? Yes, when it is available from the supplier.